Valve for gas-engines.



R. SCHMITZ; VALVE FOR GAS ENGINES.

APPLICATION FILED M AYH Patnted May16, 1916.

[SHEETS-SHEET 1.

A TTOR/VEY IU TED srnras PATENT canton.

RICHARD SCHMITZ, or omcnco, ILLINOIS, AssIGnon T scnnrrz ENGINE coIvIPAnY,

A CORPORATION OF SOUTH DAKOTA.

VALVE FOR GAS-ENGINES.

.Specification of Letters Patent.

Patented May 16, 1916. v

. Original applicationfiled March a, 1911, Serial No. 612,512. Divided and this application filed May 11,

19.12. Serial No. 696,609.

application is a division and has for its obj ect to provide an improved form of valve. My means of accomplishing the forego- I ing may be more readily understood byhaving reference tothe accompanying drawings,

' which are hereunto annexed and are a part of this specification, in which:

Figure 1 isa. side elevation of an engine utilizing my improved valve. Fig. 2 is a section taken on line new in Fig.1. Fig. 3 is a modified form' ofvalve construction. Fig. 4 isafragmentary detail view of the walls and pressure platewhen this form of valve is used. I.

Similarreference numerals refer to similar parts throughout the entire description.

As shown in the drawings, 1 indicates the cylinders, having pistons 2 operating there- 1n.

3 is a connecting rod pivotally attached to a piston by means of the piston pin 4, the

connecting rod extending to a crank 5. This part of the rod has been omitted, as it per se forms no part of my-present invention, and for the reason that any of the usual de- Y vices for this purpose may be used.

' mounted on and r-igidlv-securedto the end On the crank 5 adjacent the arm'6 thereof,

I mount a bevel gear 7, which must be of sufficient diameter, so that'the arm of the crank will clearthe inner edge of the teeth of the said gear. This gear is in mesh with a gear 8, which is fixedly mounted upon a shaft 9, which is suitably secured in a side wall 10 of the crank case, a fragmentary portion of the latter only being shown. The

outer end ofthis shaft 9 has asprocket '11 mounted thereon,'which carries a chain 12, which extends toa' sprocket 28, which is of the valve shaft 13. This shaft is mount ed and rotates in a bearing 14 and extends between the cylinders from one side'to the other. 1

Considerable difiiculty has been experienced in the operation, of rotary valves due of large spaces 16 and 18, which are open to 4 the air and which it will be observed completely separate the shaft bearing from contact with the cylinder walls'except at the ends, and these walls are directly in contact with the water in the water jacket, so that they will not be subjected to undue heating.

'An annular shoulder 17 is 'cast or formed on theside walls of the adjacent cylinders, and a port or passage extends from the face of the said lug to'the interior of each of the said cylinders. A similar shoulder is formed on the opposite walls of the cylinders and is also provided with ports or pas-' sages for the inlet of the explosive charge.

. of the disk by a beveled wall 31, and inasmuch as 'the bevel extends away from the pressure plate 20, it will be apparent that an annular space 32 is lei; intermediate the external wall .of the disk valve and the internal wall of the pressure plate 20, and in addition to helping to cool the valve, this construction strengthens the disk by stiffening it very materially. As shown in Fig. 3, I have provided an additional raised portion 33 formed on the opposite side of the valve, which is also connected by means of a beveled wall to the main portion of the disk itself. This construction increases the size of the air space which surrounds the shaft 13, and a's/shown provided with an annular recesstoiaceom+ modate the portion' 33-when thisc formis'f used. The valve is provided wither ppening 29, which is adapted to register \with the ports or passages extending fror'nthe face ofdthe shoulder to the interior of the cyl- 111 er.

art that'the shape of. the openings may be varied to suit conditions, as to whether one des1red toaccomplish extra quick opening or closing or other variations without de-v It will be obvious to persons skilled in the except when the area of the ports vary.

For the purpose of illustration, I have shown aconcrete form for rotating the valve shaft 13, and in turn. the valves proper, but I do not wish to be understood as limiting myself to the precise form shown, as many mechanical devices may be'used to accon1-' plish the result. For example, a shaft and beveled gears or a train of gears might be' employed, and in fact a number of devices, all of which-would be capable of effecting I tion.

rotation of the valve in the desired direc- The operation of the device is as follows: The rotation of the crank 5 carries with it, the bevel gear 7, and it, in turn, causes the bevel gear 8 to rotate, thus causing the ro-. tation of the shaft 9,]which carries with it, the sprocket 11, and thus through the medium of the chain 12, the valve shaft 13 3 0. is rotated. The rotation of this shaft brings the opening in the inlet valve in register with the port or passage, leading the incoming charge to the interior of the cylinders, the opening in the exhaust valve being so located with reference tothe opening in the inlet valve so as to cause it to come into register with the exhaust port or passage at the proper time to ermit the discharge of the products of com ustion. 1

Having described my invention, what I regard as new and desire to secure by Letters Patent, is: t i

1. The comb'nation with' a gas engine, provided with ports of a shoulder on adjacent cylinders, of a disk valve, a rotating shaft on which said disk is mounted, a hub in the center of said disk, which is connected to the disk by a beveled wall, a pressure plate to hold said valve to its seat, there being an annular chamber surrounding the shaft and intermediate the beveled wallof the valve and the inner surface ofthe pressure plate, there being openingsin said valve corresponding to the ports of the en-- gine.

2. The comblnation w1th a gas engine provided with ports of a shoulder on adj acent cylinders, of a disk valve, a rotatableshaft on which saidv disk is mounted, a hub in'eaoh side of the said disk which is connected to the disk by beveled walls, a chamber therebetween forming an annular space which'surrounds the said shaft, there being openings in the said disk corresponding with the ports of the engine.

In WltIlGSSWhGI'GOf I have signed the fore going. specification.

' RICHARD SGHMITZ.

Witnesses: a Y

K. DOLBEY, G. M. BAUMEISTER. 

